Carbureter.



vv WIN@ C. H. MALSTHOM & W. K. ANDERSEN.

CARBURETER.

APPLICATION FILED MAR. 28, I9I3.

Paented Apr. 25, 1916.

Wtiltllllt @wenn aanwas radianti onthou..

CARL HJ'ALMAJELIMLSTROM AND WILLAM K. ANDERSEN, OF NEW YOEIK, N. Y.

CARBURETEE.

ritenere.

Application led. March 28, 1913.

To all whom t may conce/ML Be it known that we, CARL HJALMAR lihLsrrnoM, a subject ot' the `King of Sweden, and WILLIAM K. ANonnsnN, a subject of the King of Denmark, and residents of the borough of Brooklyn, in the city and State of New York, have invented a new and useful Improvement in Carbureters, of which the following is a specification.

The object of our invention is to provide means whereby an additional charge of fuel is automatically deposited upon the auxiliary air intake valve upon starting the engine. i

A further object is to provide an auxiliary air inlet valve which by its movement will control the amount of fuel to be deposited thereon.

A still fprther object is to provide novel means whereby the auxiliary air valve may be adjusted with a greater or lesser degree of tension.

A practical embodiment of our invention is represented in the accompanying drawings, in which- Figure 1 represents the carbureter in top plan. Fig. 2 represents a side elevation.

3 represents a longitudinal vertical central section taken in the plane of the line A-A of Fig. 1. Fig. 4 represents a vertical section taken in the yplane of the line B-B of Fig. 2. Fig. 5 represents a detail horizontal section taken in the plane of the line a,C-C of Fig. 2. F ig. 6 represents. a detail side elevation of a ymodified form of carbureter. Fig. 7 represents a detail vertical section taken in the plane of the line D-D of Fig. 6, and Fig. 8 represents a horizontall section taken in the plane of the linev E-E of Fig. 6.

The carbureter comprises an upper casing member 1 containing the mixing chamber and auxiliary air inlet, a lower casing member 2 containing the liquid hydrocarbon chamber, and the Venturi tube 3 which is detachably secured to the upper member 1 and to the lower member 2 and serves to hold the upper and lower members in their assembled position. The upper member 1 Vis provided with a mixing chamber 4 and Specication of Letters Patent.

Patented Apr. 25, 19H16.

serial no. retiree. i

an auxiliary air inlet chamber 5 which communicates with the mixing chamber 4 through a passage 6. A throttle valve 7 is provided for the outlet 8 from the miX- ing chamber 4.

A valve 9 having a piston or plunger 10 depending therefrom is iittcd to slide in the chamber 11 of a cylinder formed integral with the upper casing member 1. The valve 9 is further provided with a stem 12 uprising therefrom which is in engagement with a yoke 13 secured to the upper casing inember 1 by screws 14.

For the purpose of adjusting the pressure of the walve 9 upon its seat we provide an adjustable bearing lvhaving a screw threaded engagement' with the yoke 13 between which bearing and a shoulder 16 on a collar 17 fixed to the top of the stem 12 there is intel-posed a spring 18. The bearing 15 is recessed as shown at 18* for the reception of the spring. f The end of the bearing extending below the yoke 13 is reduced and provided with a screw-thread 19 fitted to receive an adjusting nut 20, which nut supports one end of a spring 21 and serves to compress the said spring against the bottom of the collar 17.

To secure the adjustable bearing against any unintentional rotation we provide the bearing with a series of vertical grooves 22 near the top, which are adapted to receive a spring pressed ball 23 secured in a lug 24 uprising from the yoke 13.

To secure the adjusting nut 20 against rotation, a pair oi" spring pressed balls 25, 26, arranged diametrically opposite in lugs 27, 28 on the under side of the yoke 13,

are adapted to engage a series of vertical grooves 29 cut in the nut 20. llt will thus be seen that by the rotation of the bearing 15 the spring 18 may be tightened or loos cned, and by rotation of the adjustablenut 20 the spring 21 may be tightened or loosened thereby adding or relieving the tension on the valve 9.

The lower member 2 contains the liquid hydrocarbon chamber within which is located a concentric float 30 surrounding the body portion of the Venturi tube 3. The

loo

float controls the supply of liquid hydro- A carbon from the supply pipe 31 in the usual m 3.11116 IU The axially arranged liquid hydro-carbon supply nozzle 32 extends upwardly into the carbureting chamber 33 and -is removably Secured in the upper end of' a hollow centrally arranged lug 34 within the Venturi tube 3, the lower end of which lug is 'closed by a suitable screw v34*. 'A transverse duct 35 leads linwardly from the liquid hydrothe nozzle 32. The bottom of the Venturi tube isA provided withfa/scre-w-thraded portion 36 for receiving the caged nut 37 which nut is adapted to receive a main air inlet pipe 38 and secured by a nut 39 on the stem 40. The main air inlet pipe 38 is provided with a .suitable valve 41.

For the purpose of depositing an addi tional charge of liquid hydro-carbon upon the auxiliary air inlet valve 9 there is formed in the wall of theiliquid hydrocarbon chamber two passages 42, 43, which are connected by ducts 44, 45, to the liquid hydro-carbon chamber. Small tubes 46, 47 lead from thcl passages 42', 43 up through sleeves 48, 49 ixed Vin the upper casing member, and terminating a short distance above the auxiliary air inlet valve 9.

. From the passage 43 leads a pipe 50Vwhich connects with a well 5l in the bottom of the piston chamber 11 in the upper casing mem- In operation the throttle valves 7 and 4l being opened causes the suction ,due to the inward movementj of the work piston of theengine, not shown, to open the auxiliary air inlet valve 9, which will force its piston or plunger 10 down in its chamber 11 and exert sufficient pressure to cause the liquid hydro-carbon to be forced up through the tube 47 and on top of the valve 9, whereupon the liquid Will be drawn with the auxiliaryair into the upper casing'member and mixlng chamber 4, Where it'will mix ,with the regular charge from the Venturi tube and pass out through the utlet 8 to the piston,

thereby causing a vi'y yrich Ymixture to beVV fed to the engine at' the time of starting.

This .forcing of the liquid hydrocarbon up through the tube" 47 -is accomplished because the duct-45 is so small that the liquid hydrocarbon will escape moreieadily through the larger opening through the tube 47 than through the duct 45; this duct being merely for the purpose of supplying the liquid hydrocarbon t o the passage' 43. An additional supply of l1qu1d hydrocarbon is drawn from the passage 42 through the tube 46 and de positedonto the top of the valve. 9, due to :the suction caused by the opening of the 'said valve.

" The tube 47 'is made to snugly t, thpassage 43 so that the liquid hydro-carbon will be fo'rced up through the tube atthe initial movement of the plunger. The bore of the tube 47 is reduced at its lower end, which being heldin the liquid hydro-carbon at all times keeps the tube full vand ready to be squirted in a ne streamupon the top of the valve 9. The duct 45 is made smaller than the duct 44, to prevent an excess sup- Vvply of liquid hydro-carbon being sucked in y the plunger in its movement, and to permitv the plunger to add greater force to the stream to be squirted up through the tube 47. ln the form shown in Figs. 6, 7 and 8 the passages52 and 53 are similar inform and size, and are connected'to the liquid hydrocarbonjchamber by ducts 54, 55. Small tubes 56, 57 lead from the passages 52, 53 up through 'the sleeves 58, 59 fixed in the upper casing member terminating' with the ends turned down and a short distance above the auxiliary air inlet valve 9. In this form the suction from the workpiston of the engine, notshown, alone draws or sucks the charge of li uid hydrocarbon from both the tubes 56, 5g?, and to the top of the auxiliary air inlet valve. It will be seen that the piston acts as a guide for the auxiliary valve 9 andv not as a pump.

In both forms the piston and piston chamber actas adash Vpot serving to control the initial movement of the valve, also preventing the valve from chattering when ruiming at high speed, and absorbing the jar' or sudden action given the springs upon starting.

Itis obvious that slight changes might be resorted ,to in the form and arrangement of. the several parts without departing from the spirit and scope of our invention; hence we do not wish to limit ourselves strictly to the structure herein set forth but,

What we claim is 1. A carbureter comprising a liquid hydrocarbon chamber, a mixing chamber, a mainair inlet an auxiliaryair inlet, its valve, and

means controlled by said valve for discharg-'l said: valve. f

3. A carbureter comprising a liquid hydro 'carbon chamber, a mixing chamberwa main air inlet, an lauxiliary air inlet, its valve, and means controlled by said valve for forcing a supply of liquid hydro-.carbon upon the said valve, and an independent means for depositingan additional supply of liquid hydro carbon upon the said valve. j

.insonnia I i. A carbureter comprising a miningr chamber, an auxiliary air inlet, its valve, a main air inlet, a liquid hydro-carbon cham ber, a passage in the ivall. ot the carburetor communieating,- with the liquid hydro-carbon chamber, and means controlled by said auxiliary air inlet valve for forcing),` a su pply auxiliary valve.

G. il carbureter conutirisingl a mixing; chamber., an auxiliary air inlet, its valve, a main air inlet, a liquid hydro-carbon chamber, passages in the Vall of the carbureter communicating with the liquid hydro-carbon chamber, means controlled by said auxiliary inlet valve for forcing a supply of liquid hydro-carbon from one passage'to the top of said valve and an 'independent'v means for depositing a supply of liquid hydro-carbon from another passage to the top of said valve.

' 7. il carburetor comprising an upper mr uiber having therein a mixing chamber,

an auxiliary air inlet and its valve, a lower member having therein a main air inlet and a liquid hydro-carbon chamber, passages in the Wall of the lower member communicating with the liquid hydro-carbon chamber, means vcontrolled said auxiliary inlet valve for forcing a supply of liquid hydro! carbon from one passage to the top of said salve, and an independent meausfor depositing a supply of liquid hydrocarbon from janother passage to the top ol' said valve.

' 8. il, carbureter comprising a mixing chamber, an auxiliary air inlet, its valve, a main air inlet, a liquid hydro-carbon. chamber, a pair of passages inthe Wall of the carburetor having connections leading,- to the top ol said auxiliaryinlet valve and communicating with theliquid hydro-carbon chamber, means controlled by said auxiliary inlet valve for forcing a supply ol' liquid hydroi'farbon from one passage to the top oi said valve and an independent means for deposita supply of liquid hydro-carbon to the.

top of said valverom the other passage.

9. A ca rbi feter comprising an upper memA ber having; therein a mixing chamber, an vauxiliary air inlet and its valve, a lower member having therein a main air inlet and a' liquid hydro-carbon chamber, a pair of passages in the Wall of the lower member having connections leading to the top ol said valve and communicating with the liquid hydro-carbon chamber. means controlled by said auxiliary inlet valve lfor forcinga supply of liquid hydro-carbon from one passage to the top of said valve, and an independent i0 means for depositing a supply olfY liquid hydro-carbon to the top oi said valve from the other passage.

l0. carburctcr comprising a miningI chamber, a piston chamber, an auxiliary air inlet, its valve having a plunger depending therefrom and fitted to slide in said piston chamber, a main air inlet, a liquid hydro-carbon chamber, i passage in the wall of the liquid hydro-carbon chamber and communicating therewith, said passage having a connection leadiingytherefrom to the top of the auxiliary valve and means controlled by said valve for forcing a supply` of liquid hydro-carbon through the passage and its connection to the top of the valve.

l1. A carbureter comprising an upper member having therein a mixing chamber, a piston chamber, an auxiliary air inlet, its valve having a plunger depending therefrom and. fitted to slide in said piston chamv ber, a lower member having therein a main air inlet, and a liquid hydro-carbon chamber, a passage in the Wall of the liquid hydro-carbon chamber, said passage havinga connection leading therefrom' to the top of the auxiliary valve, and means controlled `ley/said valve for 'forcing' a supply of liquid hydro-carbon through the passage and its connection to the top' of the valve.

12. A carburetor comprising a mixing chamber, a piston chamber, an auxiliary air inlet, its valve having a plunger depending therefrom and4 fitted to" slide in said piston chamber, a main air-inlet, a liquid hydrocarbon chamber, a pairof passages in the wall of the liquid hydro-carbon chamber and communicating therewith, said passages having connections leading therefrom to the top ot' they auxiliary valve, means controlled by said valve" for forcing a supplyl oli' liquid hydro-carbon through one passage and its connection to the top of the auxiliary valve' andan independent means for depositing` a supply of liquid hydro-carbon through the other passage and its connection to the top of the valve.

13. A carbureter comprising" an upper member having therein a mining; chamber, a piston chamber, ,an auxiliary air inlet, its valve having a. plunger depending there from and fitted to slide in said piston chainher, a lower member having therein a main air inlet, a liquid hydro-carbon chamber, a pair oit passages in the Wall oi' the liquid hydrocarbon chamber and communicating therewith, said passages having' connections leading therefrom to the top of the auxiliary 3y maqma Valve, and Smeans, controlled by said valve for forcing a supply of liquid hydro-carbon through one passage to the top of the valve, and means imlopendent of 'the valve for cle-- positing a' supply of liquid hydrocarbon upon the top of the valve from th other passage.

In testimony, zhat we claim the foregoing as our invention, we have sgn'ed'our names in presence of two witnesses, this izwenty- 10v sixtlclfiy of March, 1913.

CARL HJALMAR MALSTROM. 'WLLIA' K. ANDERSEN. VvitneSsos:

F. (hmmm BARRY, OTTO 'W. HOLMGREN. 

